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Contamination of extended life coolant on Chevrolet Silverado 3500 HD

Problem overview

Extended life coolant may become contaminated and require cooling system service before the recommended 100,000 miles.

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Submitted by Vehicle Owner · May 29, 2025

Published by RepairPal

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Contamination of extended life coolant on Chevrolet Silverado 3500 HD

Problem overview

Chevrolet Silverado 3500 HD vehicles with this problem

Need a diagnosis? Trust our Chevrolet experts.

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Ask our experts about your Chevrolet.